Polygons must not self-intersect for polygons

[JonathanMcDowell1]

Polygons must not self-intersect for polygons is self explainitary.  There is a need to have a rule that identifies polygons where the boundary crosses over itself.  If the polygon is in the shape of a figure 8 then it violates the topology rules.

[NickBos1]

Long over due.

[AndrewWillingale]

It strikes me that this is an obvious rule for all polygon layers.

[AndrewWillingale]

It strikes me that this is an obvious rule for all polygon layers.